| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cold Spray Additive Manufacturing: Part Quality and Performance
|
| Presentation Title |
Role of Carrier Gas on Microstructure and Anisotropic Properties of Cold Sprayed Scalmalloy |
| Author(s) |
Anil Lama, Denny John, Tanaji Paul, Arvind Agarwal |
| On-Site Speaker (Planned) |
Anil Lama |
| Abstract Scope |
Commercial high-strength Aluminum alloy application is restricted at elevated temperatures due to precipitate coarsening and dissolution. Sc/Zr-based Al alloy can be a potential alternative because of strengthening from thermally stable precipitates. In this study, Scalmalloy powders were cold sprayed using helium and nitrogen as carrier gas. Microstructural analysis revealed bimodal microstructure with enhanced splat flattening in He-deposit compared to N2-deposit, demonstrating severe plastic deformation. This led to variation of properties in splat level to bulk deposit, which is captured through nano-indentation, micro-indentation, and profilometer-based indentation plastometry techniques. Consequently, He-deposit exhibited higher yield strength (YS = 378 ± 8) and ultimate tensile strength (UTS = 467 ± 5 MPa), compared to N2-deposit (YS = 325 ± 16 MPa, 450 ± 6 MPa). Furthermore, a comparison of indentation characteristics in multiple length scales with microstructure was established for both deposits. This study opens new avenues for developing state-of-the-art high-strength Al alloy deposits. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |